Understanding The Radar Overlay Screen; Obtaining Optimal Radar Display Performance - Garmin GPSMAP 4010 Owner's Manual

Using Radar
MARPA target (only appears when you are targeting a tagged MARPA object)—opens the
MARPA target information window.
Lost MARPA
target
Tracking
MARPA target

Understanding the Radar Overlay Screen

Use the Radar Overlay option to overlay radar information on the Navigation chart.
From the Home screen select
overlays the Navigation chart. Use the
keys (GPSMAP 5000 series) to zoom in and out. Zooming while panning the map only affects the
zoom scale of the map. The radar range remains the same. Zooming while the map is locked on the
boat (not panning) affects the zoom scale of the map and the radar range.
To access additional settings or options for the radar overlay screen, select Menu. Select
Chart Setup to access the chart options. Select

Obtaining Optimal Radar Display Performance

The gain controls the sensitivity of the radar receiver. The default setting for the gain, Auto, adjusts
the gain automatically to provide the best performance.
To adjust the gain:
Menu Gain
1. Select >
2. Select Up or Down to manually adjust the gain; select
setting.
42
MARPA Targeting
Radar > Radar Overlay. The radar picture appears in orange and
RANGE
Radar Setup
on the radar screen.
(+/-) keys (GPSMAP 4000 series) or the
to return to the radar setup options.
Auto to return the gain to the default
GPSMAP 4000/5000 Series Owner's Manual
®
Closest point and time of
approach to dangerous
MARPA target
Dangerous
MARPA target
Acquiring
MARPA target
Radar range
and
Setup
>